New submission from Manuel de la Pena <man...@canonical.com>:

During our development we have experience the following:

If you have a user in your Windows machine with a name hat uses Japanese 
characters like “雄鳥お人好し” you will have the following in your system:

* The Windows Shell will show the path correctly, that is: “C:\Users\雄鳥お人好し”
* cmd.exe will show: “C:\Users\??????”
* All the env variables will be wrong, which means they will be similar to the 
info shown in cmd.exe

The above is a problem because the implementation of expanduser in ntpath.py 
uses the env variables to get expand the path which means that in this case the 
returned path will be wrong. 

I have attached a small example of how to get the user profile path (~) on 
Windows using SHGetFolderPathW or SHGetKnownFolderPathW to fix the issue. 

PS: I don't know if this issue also occurs on python 3.

----------
components: Windows
files: expanduser.py
messages: 145798
nosy: mandel
priority: normal
severity: normal
status: open
title: os.path.expanduser brakes when using unicode character in the username
type: behavior
versions: Python 2.7
Added file: http://bugs.python.org/file23442/expanduser.py

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<http://bugs.python.org/issue13207>
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